CN101636539B - Jack-up platform - Google Patents
Jack-up platform Download PDFInfo
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- CN101636539B CN101636539B CN2007800522565A CN200780052256A CN101636539B CN 101636539 B CN101636539 B CN 101636539B CN 2007800522565 A CN2007800522565 A CN 2007800522565A CN 200780052256 A CN200780052256 A CN 200780052256A CN 101636539 B CN101636539 B CN 101636539B
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- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000011217 control strategy Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
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- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Multiple Motors (AREA)
- Earth Drilling (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Ladders (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a jack-up platform (1) comprising a hull (2) and at least three longitudinally movable support legs (3) for said hull (1), at least one of said support legs (3) comprising at least one variable speed drive (8, 8A1to 8F2) as a part of a leg driving mechanism, wherein the platform (1) comprises a closed-loop control unit (7) for said driving mechanism, the closed-loop control unit (7) being connected with said variable speed drive (8, 8A1 to 8F2) via a bi-directional electronic bus (16) for transmitting control parameters (M*, M, N, R).
Description
Technical field
The present invention relates to a kind of jack-up unit.Jack-up unit generally includes vertically spud leg movably of hull and at least three.These spud legs all can move individually with respect to housing, promptly use at least one driving mechanism to rise or to descend.Usually, all has at least one independent driving mechanisms on each spud leg.
Background technology
In order to make the platform preparation of working well, the lower end of spud leg must be placed on the fixed ground.For this reason, reduce these spud legs and contact ground up to them.Then, by correspondingly driving spud leg, hull can be raised to the optional position that is higher than ground to cause moving of hull.Spud leg can be arranged in parallel or tiltable to improve the stability of jack-up unit.Ground can have and/or uneven profile.In this case, spud leg is driven into different positions to keep the balance of hull.
For marine jack-up unit, usually, hull is designed to floatability under the highest propradation of spud leg.Therefore, this platform can be transported to its operating position at an easy rate, for example, drags it by using towboat along the water surface.When platform arrives its operating position, just in water, reduce spud leg, all touch the seabed up to each spud leg.For the stable of platform leaves standstill, just hull can be raised to and exceed horizontal plane, thereby increase load on the spud leg.These platforms are applicable to the water body that reaches 150 meters degree of depth usually, but are not suitable for the deep-sea.
This jack-up unit is used for, for example, and exploration or exploitation submarine oil and the offshore oil in natural gas field and the operation of gas industry.In other words, they can be used as movably natural gas or oil drilling platform.Other application of marine jack-up unit has, for example, and maintenance activity on seabed pipeline or other submerged pipeline and the riverbed operation in rivers or the dock.
A kind of preferred drive mechanism that is used for jack-up unit is disclosed in WO 2005/103301 A1.There, proposed to come mobile spud leg and be used to that hull is remained on to exceed the precalculated position of ground, differed widely with the asynchronous motor that uses in the technology formerly with permanent exciting motor (being also referred to as " permanent magnet motor ").Like this, just do not need mechanical brake to come fixing platform provisionally, because can remain on original position to hull fully by the efficient permanent magnet motor.In addition, the permanent-magnet electric function realizes moving of spud leg with infinitely variable speeds, thereby allows the steady operation of high torque (HT), differs widely with the technology formerly with double speed operation, high error.Yet, do not disclose the effective ways of controlling driving mechanism so far.
Disclose a kind of device that moves that is used to regulate the jacking system of portable offshore structure in US 2006/0062637A1, it has buoyant hulls and a plurality of spud leg, and this device comprises:
With each relevant lifting assembly of these a plurality of spud legs, be used for vertically moving each of this spud leg;
Power set functionally are connected to described lifting assembly, are used to transmit locomotivity and give described lifting assembly; And
Be connected to a device of described power set, be used to produce two-way torque control, be beneficial to the constant power of the supply of described lifting assembly to these power set.
Summary of the invention
The objective of the invention is to determine a kind of jack-up unit, it provides high-performance and spud leg operation reliably.
According to the present invention, deal with problems by the jack-up unit that comprises the given feature of claim 1.
The present invention proposes a kind of jack-up unit, and it comprises hull and is used at least three of this hull vertically spud legs movably.In these spud legs at least one comprises at least one variable speed drive (VSD), and this at least one variable speed drive is the part of spud leg driving mechanism.This platform comprises the closed-loop control unit that is used for this driving mechanism.This control module is connected to this variable speed drive by two-way electronic busses, is used for transmission control parameters.This means that this variable speed drive is integrated in this control system.This realizes by two-way electronic busses joint, for example, and high speed fieldbus or Ethernet.
This electronic busses connects head and guarantees that in closed-loop control control module can use the important controlling parameter from variable speed drive, and as actual speed and actual torque, vice versa.On the one hand, this can obtain high performance spud leg operation, because can make full use of available velocity/torque in closed-loop control.On the other hand, the stable speed/torque control of driving mechanism becomes possibility.In addition, even use induction conductivity, variable speed drive also can obtain the infinitely variable speeds campaign.
In addition, this variable speed drive can be controlled induction conductivity or permanent magnet motor.Preferably, this variable speed drive is connected to permanent magnet motor or permanent magnet direct current motor, with the variable speed drive permanent magnet motor.With regard to the rotor loss, permanent magnet motor is better than asynchronous motor when being in the holding position with regard to high deck.In this case, especially reduced the stressed and heat radiation of motor.Under latter event, if used a plurality of motor, each variable speed drive all needs transverter separately so.
According to the present invention, described control module comprises speed control, and it is by the torque controller transmitting torque set point of described bus contact to variable speed drive.This cascade control structure allows to separate different functions of modules in this control module.This speed control is determined and be transfused to speed set point by the outside.Speed set point and torque settings point all can obtain between module, for example, are used to apply for example constraints of torque limit.Therefore, these modules can be worked independently of each other, thereby reduce the error trend of control module.
Valuably, described torque controller is integrated in the described variable speed drive.Like this, this variable speed drive can be compact.In addition, can operate the controlled jacking system of variable speed drive, increase operational security without the personnel on the deck.
In a preferred embodiment, described speed control can receive the values for actual speed of described variable speed drive by described bus contact.Values for actual speed is the preferred effective control parameter of spud leg motion closed-loop control.
Can confirm that module improves the reliability and the accuracy of spud leg motion by the velocity sensor that places described speed control upstream.Also can confirm for any other controlling parameter (for example actual torque value or gravimetric value) provides controlling value and sensor.In the lift work of key, controlling value and sensor affirmation module can be assessed situation and the numerical value from each sensor.This assessment is based on the expectant control strategy.
Described velocity sensor confirms that the used preferred control strategy of module is, for example, selects the velocity amplitude of correct velocity amplitude of most probable and/or high bandwidth sensor.The correct value of most probable is confirmed as, for example, and from maximum value, average, the low selection or calculating mean value of function sensor.The high bandwidth of velocity amplitude be by, for example use directly from the velocity amplitude of motor sensor rather than obtain from the calculated value of velocity sensor value.By these control strategies, just can guarantee the high reliability and the accuracy of lift work.
In another preferred embodiment, this control module comprises the torque limit module that described torque settings point is worked, and described torque settings point is exported to described variable speed drive by described speed control.Independently the torque limit module can realize inside and outside constraints, and for example power limitations and operator are provided with restriction.For example, can select to apply fixing or the variable torque restriction except the effective current restriction, and not influence the action of speed and torque controller to driving mechanism.The result produces transition more stably at lift work.
For this reason, described torque limit module can be carried out the torque/Power Limitation of associating valuably.For the present invention, torque/the Power Limitation of associating comprises, under the low speed situation, come the torque settings point of maximum speed limit controller by inside or external setting-up torque limit, and, under high-speed case, come the torque-limiting set point by unsteady restriction according to the usable power on the platform.
Preferably, described torque limit module can receive the actual speed and the actual torque value of described variable speed drive by described bus contact.Therefore, by direct monitoring variable speed driver, independently the torque limit module can realize the outside or the internal constraint condition of torque settings point.This guarantees the short reaction time and the high reliability of driving mechanism, and reduces mechanical wear.In highly preferred embodiment, described control module comprises the speed control of a correspondence that is used for each spud leg.So just can further disperse closed-loop control by the subtask being distributed to different standalone modules.Yet in the group performance of all spud legs, all speed controls can receive that usually identical speed set point is as input.Then, the torque limit module will work to all the torque settings points by the output of corresponding speed controller.
Advantageously, the driving mechanism of at least one spud leg comprises more than one variable speed drive.Can distribute the lifting load like this.If a driver breaks down, another one can continue available at least.This has increased the reliability of spud leg motion operation greatly.
In unusual complex embodiments, each variable speed drive of the spud leg of described multiple driver all comprises the torque controller that described bus contact and corresponding speed control connect that passes through of a correspondence.Thus, all variable speed drives are integrated in the control system.This cascade control structure increases the reliability of driving mechanism, because individual module and/or variable speed drive may lose efficacy, but can not stop lift work.Remaining driver will only bear additional load.
Preferably, described two-way electronic busses is a kind of high speed fieldbus, for example PROFIBUSDP.This electronic busses also can be well-known Ethernet growth.These substitutes are cheap but reliable bus systems, have the short reaction time.
Description of drawings
Further explain embodiments of the invention with accompanying drawing below.In the accompanying drawings:
Fig. 1 shows the diagrammatic side view of jack-up unit;
Fig. 2 shows the simplified block diagram of the Drive and Control Circuit of permanent magnet motor; And
Fig. 3 shows the signal torque-hodograph of torque limit.
In whole accompanying drawings, identical parts are marked by identical Reference numeral.
The specific embodiment
The schematically illustrated marine marine jack-up unit 1 greatly that is positioned at of Fig. 1.It comprises that hull 2 is parallel with some, vertical movable spud leg 3 (promptly 4 only illustrate wherein two).Hull 1 is delivering, and for example is used for the drilling equipment of oil field prospecting.In state shown in Figure 1, all spud legs 3 all are positioned on the sea bed 4 as the fixing inclination of ground.Hull 1 lifts and exceeds 5 several meters at horizontal plane.
Each spud leg 3 has been equipped with the driving mechanism 6 of the variable speed drive that contains a plurality of correspondences, i.e. and 18 (Fig. 1 is not shown), this drive mechanism rack and wheel device, this driving mechanism and all spud legs 3 shared closed-loop control unit (Fig. 1 is not shown) combine.For example for the triangle spud leg, the variable speed drive of each spud leg 3 is assigned to three independent groups, and every group all has driver A to F separately.They comprise can realize that infinitely variable speeds ground drives the permanent magnet motor (not shown) of spud leg 3.All variable speed drives 8
A1(the driver A of group 1) is to 8
F3(the driver F of group 3) (see figure 2) all has independent transverter (not shown).
Platform 1 can be lifted with automatic and manual operation mode by long-range or local lifting console (not shown).
Fig. 2 shows the critical element of driving control system with the form of simplifying.It comprises the variable speed drive 8 of a closed-loop control unit 7 and a spud leg 3
A1(the driver A of group 1) is to 8
F3(the driver F of group 3) is used to drive for example permanent magnet motor (not shown).For for simplicity, only illustrate variable speed drive 8
A1, 8
F1, 8
A2With 8
F2For the same reason, other spud leg 3 is not shown yet in the accompanying drawing.
The operator can be according to one or more levers of operator scheme activation lever group 9, and this lever group comprises an independent spud leg bar that is used for each spud leg 3 and a mobile jib that is used for collective's operation of all spud legs 3.By the state of speed set point selection and correcting module 10 reception lever groups 9, this module 10 is with speed set point N
*Export to the corresponding speed controller 11 (speed control 11 only is shown) of each spud leg 3.Speed control 11 is given the variable speed drive 8 of distributing to them
A1To 8
F2The torque settings point M that output is corresponding
*
Except speed control 11, control module 7 also comprises the braking control module 13 of torque limit module 12 and control brake 15.Braking control module 13 confirms that from weight sensor module 14 receives the weight sensor value.Weight sensor confirms that module 14 can receive its input value from the weight cell on the spud leg 3 or the weight estimation device from the spud leg.Braking control module 13 also receives the feedback signal of the brake of controlling from it 15, and all variable speed drives 8
A1To 8
F2Actual torque value.
For back one purpose, control module 7 is via PROFIBUSDP and variable speed drive 8 as two-way electronic busses 16
A1To 8
F2Connect.On the one hand, connect torque settings point M by this electronic busses 16
*Be transferred to each variable speed drive 8 from the speed control 11 of correspondence
A1To 8
F2Controller 17.On the other hand, actual torque value M is from variable speed drive 8
A1To 8
F2Be transferred to torque limit module 12 and braking control module 13, and values for actual speed N is from variable speed drive 8
A1To 8
F2The velocity sensor that is transferred to the correspondence that places speed control 11 upstreams is confirmed module 18.In addition, the mark R of signal notice Drive Status " RUN " or " stopping " is from each variable speed drive 8
A1To 8
F2Be transferred to torque limit module 12.For the clearness of accompanying drawing, just simply draw actual value N, M and R via electronic busses 16 from variable speed drive 8
F1, 8
A2, 8
F2Transmission.This also is applicable to by torque limit module 12 and is applied to driver bank 2 and the torque limit of organizing on 3.
Because some parts may have fault between the lifting operational period, weight sensor affirmation module 14 and velocity sensor are confirmed state and the numerical value of module 18 according to their input pickup of control strategy assessment.They can select the correct value of most probable from the function sensor, and this may be maximum value, average, weak selectivity or calculating mean value.They can also select to have the sensor of high bandwidth.For example, velocity sensor confirms that module 18 can use the velocity amplitude from automobile, rather than from the computational speed value of position sensor.Also can provide other sensor as an alternative.Obtain signal from locking/clamp mechanism for the braking feedback input of braking control module 13.
Each speed control 11 generation torque settings is put all variable speed drives 8 to its downstream
A1To 8
F2This set point can be limited by senior control structure (for example power-supply management system PMS or the operator who is carried out by torque limit module 12 is provided with restriction).Any difference between the spud leg is adjusted automatically by horizontal controller 19, and this horizontal controller 19 has about the position of each spud leg 3 and the information of skew.The variable speed drive 8 of same spud leg 3
A1To 8
F2Between difference adjust by torque limit module 12, it is carried out torque settings point and limits.Torque settings is being put M
*Give before the bus 16, carry out restriction.
In Fig. 3, schematically shown torque-hodograph of describing two kinds of different restriction strategies.
According to status indication R and all variable speed drives 8
A1To 8
F2Actual torque value M and from the input of power-supply management system PMS and selected mode of operation, in first strategy, torque limit module 12 can be with the torque settings point M of speed control 11 output
*Be constrained to torque capacity M
Max-fix
Power Limitation is the function of a recommendation, with the dead electricity that prevents from may occur between the lifting operational period.For specialized application, be necessary to limit output to predetermined value.For simple application, use a fixing torque limit just can realize this point.For this purpose, the output of speed control 11 is by 12 monitorings of torque limit module, and if necessary, it is constrained to limiting value, except effective electric current restriction.Corresponding torque capacity when therefore, maximum output also is constrained to maximum (top) speed.
In many cases, the permanent torque limit M that sets
Max-fixBe not enough to provide effective Power Limitation.For example, torque limit must be set quite highly with regard to having high breakaway torque, and such fact can cause that exceeding maximum when high speed allows output.Also have, under the situation of the induction conductivity that the reduction of usability induction motor magnetic field is operated, only use the fixed torque restriction M under the concrete condition
Max-fixJust can obtain effective export-restriction.
Therefore, preferred second strategy is torque/Power Limitation of being carried out associating by torque limit module 12.During the low speed situation, the inner or outside torque limit M that determines
Max-lowTorque settings point M with 11 outputs of maximum speed limit controller
*During high speed conditions, it is the unsteady restriction M of foundation that actual power limit will be considered as with the available horsepower on the platform 1
Max-floatThis will be obtainable torque when being constrained to the rated current of driver transverter.Torque limit will be forever greater than predetermined minimum torque restriction M
Max-min
Except " automatically " and " manually " operator scheme, control module 7 provides the various control pattern to the operator.Their running is described hereinafter.
Automatic operation mode is designed to operate all spud legs 3 simultaneously with identical speed, and this separates with individual the correction.It also provides automatic level control when rising or decline platform 1.For this purpose, can use button from the local or control of realization level manually function at a distance by the operator.
For lifting platform 1, promptly hull 2, by operator's startup level control function.This will adjust the translational speed of spud leg, to keep the balance of platform 1.Speed automatically is constrained to for example maximum value of 2m/min, and is the function of deflection of the mobile jib of lever group 9.If mobile jib is untied, it can return the centre position and rising or falling speed gets back to zero.Brake 15 will engage later at the fixed time automatically.In any stage of operation, can adjust single spud leg speed by corresponding independent bar, promptly increase or reduce.3 work of all spud legs are consistent, and for example, in case leg lost efficacy or the person of being operated closes, other also will stop so.In any of these cases, brake 15 will engage immediately.
The process of decline hull 2 and rising similar, just reversed in order.Along with mobile jib moves downward, platform 1 descends.Negative value will appear in computational load, because torque is for negative.The decrease speed of platform 1 is constrained to, even under the deviation of lever of maximum, and 2m/min for example.In case platform 1 arrives horizontal plane, the load registration will be tended to positive, because torque becomes still less negative.The level control function that will be used for the spud leg rising is then closed.
By pressing the fixing on the console " button, select the fixing function from the lifting console.When mobile jib arrives its position, centre, this will replace the Braking mode function between platform rising and decrement phase.Between this operational period, the temperature in the motor will raise.Because motor temperature is subjected to permanent monitoring, if exceeded motor temperature warning line some, this function can automatically be ended and brake 15 can engage.
Be in when partly lifting the position at platform 1, so-called guide pile may temporarily thrust sea bed 4, and the operator keeping mobile jib downward, and along with spud leg 3 leaves sea bed 4, the spud leg rate of climb increases.Speed still is deflected into ratio with mobile jib, but in this case, is for example 3m/min to the maximum.When spud leg is in traction position, the operator will stop operation.This position can preset or define on visible display device (VDU).If can not determine or surmount, when the limit switch that sends the spud leg 3 that signal " reaches the final position " is activated, system will stop vertical motion automatically.In order to locate spud leg 3 independently, can move them with manual mode.
For spud leg descends, each spud leg is all by pushing away-pushbutton enable.This operation by the deflection mobile jib to " on " direction begins, and this means and lift hull 2 that spud leg 3 promptly descends.Decrease speed and mobile jib are deflected into ratio.In this case, maximal rate is for example 3m/min.All spud legs 3 descend with identical speed.The load meter will present negative value.
When at least one spud leg 3 touched ground and is sea bed 4, decrease speed just reduced, and until being zero, and torque for example will increase to about 30% numerical value of the maximum torque value that provided by design specifications.This torque value can be adjusted by the operator.This can remain to all spud legs 3 and reach identical state.In case all spud legs 3 all put torque limit M in place
MaxWill increase gradually.During transition, because the sea bed situation, spud leg 3 can move with friction speed.Along with torque limit M
MaxIncrease, variable speed drive 8 recovers the speed control to lifting hull 2.
Manual operation mode is designed to allow the control of each independent spud leg 3 return the operator to be responsible for.Speed depends on each independent spud leg bar position.Automatic horizontal control is inoperative in this operator scheme.
Manual operation mode allows the operator more freely to adjust, and as to the pre-loaded of spud leg 3 or do independent position adjustment, for example, is when tilting at known sea bed.This pattern has been used some restriction, just,, do not had torque limit,, also do not had automatic horizontal control, except reading tilt meter in person except the maximum value that variable speed drive 8 allows from the Power Limitation of lifting console.
For pre-loaded, platform 1 must be lifted on all spud legs 3.Therefore, the operator must select two and their are raise they are carried out the part unloading from the spud leg 3 that the diagonal angle is arranged.This is by making system enter " manually " operator scheme, and uses corresponding two spud legs 3 of " startups " button selection to finish.Use mobile jib to make them in correct direction rising (or unloading a little).This can cause the weight of platform 1 to rest on other two spud legs 3, thereby promotes the pre-loaded a pair of sea bed 4 that enters.Pre-loaded for other a pair of spud leg 3 repeats this operation after again platform 1 being positioned at sea side.
In order to extract a spud leg 3, the torque capacity that need continue for some time from sea bed 4.By selecting this function, all other torque limit have been surpassed, the restriction of calculating except power-supply management system PMS.Yet, in this operator scheme, speed can occur, and energy consumption is less than the energy consumption between platform full speed lifting operational period near zero.
Actual torque M and actual speed N are constantly monitored.When spud leg 3 begins to move and actual torque M when reducing, control module 7 reduces the torque settings point gradually, to avoid occurring unexpected " spud leg disengaging sea bed " incident.This reduce can by speed control 11 carry out or by torque limit module 12 with torque limit M
MaxForm carry out.Usually, for heavy operation, can use water jet to help the withdrawal of spud leg 3.
According to principle same as described above, can arrange the Frequency Drive Control that is used for induction conductivity, yet, need to use a little modification known in those skilled in the art.
Claims (13)
1. jack-up unit, it comprises hull and is used at least three of described hull vertically spud legs movably, in this spud leg at least one comprises at least one variable speed drive as a spud leg driving mechanism part, wherein, this platform comprises the closed-loop control unit that is used for described driving mechanism, this closed-loop control unit is connected with described variable speed drive by two-way electronic busses, be used for transmission control parameters, it is characterized in that, described control module comprises speed control, this speed control is by the torque controller transmitting torque set point of bus contact to described variable speed drive, and this closed-loop control unit comprises the torque limit module that described torque settings point is worked, and described torque settings point is exported to described variable speed drive by described speed control.
2. jack-up unit as claimed in claim 1 is characterized in that this variable speed drive is connected to permanent magnet motor.
3. jack-up unit as claimed in claim 1 is characterized in that this variable speed drive is connected to induction conductivity.
4. jack-up unit as claimed in claim 1 is characterized in that described torque controller is integrated in the described variable speed drive.
5. as each described jack-up unit in the claim 1 to 4, it is characterized in that described speed control can receive the values for actual speed of described variable speed drive by described bus contact.
6. jack-up unit as claimed in claim 5 is characterized in that, confirms module at the upstream arrangement velocity sensor of described speed control.
7. jack-up unit as claimed in claim 6 is characterized in that, described velocity sensor confirms that module selects the velocity amplitude of correct velocity amplitude of most probable and/or high bandwidth sensor.
8. jack-up unit as claimed in claim 1 is characterized in that, described torque limit module is carried out the torque/Power Limitation of associating.
9. jack-up unit as claimed in claim 1 is characterized in that, described torque limit module can receive the actual speed and the actual torque value of described variable speed drive by described bus contact.
10. jack-up unit as claimed in claim 1 is characterized in that, described closed-loop control unit comprises the speed control of a correspondence that is used for each spud leg.
11. jack-up unit as claimed in claim 10 is characterized in that, the driving mechanism of at least one spud leg comprises more than one variable speed drive.
12. jack-up unit as claimed in claim 11, it is characterized in that, each variable speed drive of the spud leg of described multiple driver all comprises the torque controller of a correspondence, and this torque controller is via described bus contact and described corresponding speed control.
13. jack-up unit as claimed in claim 1 is characterized in that, described two-way electronic busses is a kind of high speed fieldbus or Ethernet.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2007/002481 WO2008113389A1 (en) | 2007-03-20 | 2007-03-20 | Jack-up platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101636539A CN101636539A (en) | 2010-01-27 |
| CN101636539B true CN101636539B (en) | 2011-09-21 |
Family
ID=38675973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800522565A Active CN101636539B (en) | 2007-03-20 | 2007-03-20 | Jack-up platform |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US8113742B2 (en) |
| EP (1) | EP2122064B1 (en) |
| KR (2) | KR20100015725A (en) |
| CN (1) | CN101636539B (en) |
| BR (1) | BRPI0721469B1 (en) |
| DK (1) | DK2122064T3 (en) |
| NO (1) | NO343702B1 (en) |
| RU (1) | RU2426834C2 (en) |
| WO (1) | WO2008113389A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008113389A1 (en) * | 2007-03-20 | 2008-09-25 | Siemens Aktiengesellschaft | Jack-up platform |
| US20100155682A1 (en) * | 2008-12-06 | 2010-06-24 | Burns Mark L | Fast jack liftboat jacking system |
| CN101793036B (en) * | 2010-01-28 | 2011-11-30 | 中国海洋石油总公司 | Pile shoe damage and water inflow monitoring device of multifunctional self-elevating supporting platform for ocean oil field |
| CN102400454B (en) * | 2011-11-11 | 2013-09-04 | 武汉船用机械有限责任公司 | Automatic control method and device for lifting ocean platform |
| KR101422226B1 (en) * | 2012-07-06 | 2014-07-22 | 삼성중공업 주식회사 | Floating structure |
| KR101665329B1 (en) * | 2012-09-14 | 2016-10-12 | 대우조선해양 주식회사 | Leg System For Offshore Vessel |
| US9145956B2 (en) | 2013-01-25 | 2015-09-29 | Gustomsc Resources B.V. | Torque sharing drive and torque sharing process |
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- 2007-03-20 CN CN2007800522565A patent/CN101636539B/en active Active
- 2007-03-20 RU RU2009138496/21A patent/RU2426834C2/en active
- 2007-03-20 KR KR1020097021871A patent/KR20100015725A/en not_active Application Discontinuation
- 2007-03-20 BR BRPI0721469-3A patent/BRPI0721469B1/en active IP Right Grant
- 2007-03-20 EP EP07723442.5A patent/EP2122064B1/en active Active
- 2007-03-20 KR KR1020147035738A patent/KR101721841B1/en active IP Right Grant
- 2007-03-20 US US12/532,215 patent/US8113742B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| US8113742B2 (en) | 2012-02-14 |
| US20120262099A1 (en) | 2012-10-18 |
| EP2122064B1 (en) | 2016-09-14 |
| DK2122064T3 (en) | 2016-12-19 |
| US20100104375A1 (en) | 2010-04-29 |
| EP2122064A1 (en) | 2009-11-25 |
| BRPI0721469A2 (en) | 2014-03-18 |
| NO343702B1 (en) | 2019-05-13 |
| KR20100015725A (en) | 2010-02-12 |
| NO20093170L (en) | 2009-10-19 |
| RU2426834C2 (en) | 2011-08-20 |
| CN101636539A (en) | 2010-01-27 |
| BRPI0721469B1 (en) | 2018-02-06 |
| RU2009138496A (en) | 2011-04-27 |
| WO2008113389A1 (en) | 2008-09-25 |
| US8454272B2 (en) | 2013-06-04 |
| KR101721841B1 (en) | 2017-03-31 |
| KR20150004438A (en) | 2015-01-12 |
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